Cloth-shearing machine



(No Model.)

11. 0,. SUMNER. CLOTH SHEARING MACHINE.

No. 232,402. Patented July 31', 1883.

' UNITED STATES PATENT OFFI E.

DWIG T-o. SUMNER, or WORCESTER, MASSACHUSETTS.

CLOTH-SHEARINQ MACHINE.

SPECIFICATION forming part of Letters Patent No. 282,402, dated July 31,1883.

- Application filed December 30, 1882. i (No model.)

certain new and useful Improvements in Oloth- Shearing Machines; and Ideclare the following to be a description of my said invention,sufficiently full, clear, and exact to enable others skilled in the artto which it appertains to make and use the same, reference being had tothe accompanying drawings, which form a part of this specification.

My present invention relates to shearing cylinders or revolvers in thatclass of clothshearing machines wherein a cylinder or revolver havingnotched sectional or serrated blades or cutting-points is operated, inconjunction with a ledger-blade, for effecting 0rnamentati on of thefabric by cutting away portions of the pile or nap surface thereof asthe fabric is passed forward over a suitable sup port, guide, or rest inthe machine; and my invention consists in an improved construction ofthe shearing-cylinder, or in a certain peculiar order or system orarrangement of the cutting points or blade-sections on the revolver,whereby the mechanism is adapted for producing upon fabrics patterns ofa peculiarclass or nature composed of oppositely-directed intersectingor intermitting lines, broken checks, or alternately cross-markedplaids, as more fully hereinafter described.

Inthe drawings, Figure 1 is a front view of so much of a shear-revolveras is necessary to illustrate the nature of my invention. Fig. 2 is asection at line a a. Fig. 3' is a section at line b b. Fig. 4 is avertical section, showing the relative location of the revolver,ledgerblade, and cloth-support; and Figs. 5, 6, and 7 represent piecesof fabric indicating the na; tire of the pattern produced by shearingmechanism constructed in accordance with my invention. i

In reference to the drawings, Rdenotes the revolver; S, thecloth-support; L, the ledgerblade, and Mthe cloth or fabric movedthrough the machine by suitable guiding-rolls and feedarrangement asindicated, the system of cutting-edges consisting in series of narrowisolated points or sections t, developed in rows or groups of rows atintervals on the revolver,

and running in circumferential direction, but only partially. around thecylindeigthe said rows or groups of rows being stopped off, i11-terrupted, or offset by certain broader bladesections m, interposed atoccasional intervals on the peripheral circle across said rows and atsuch distances from each other as to form transverse cuts or lines v onthe fabric M when such longer blades or come in contact with theledger-blade L. The circumferentially disposed rows of cuttingsections tproduce lines 10 longitudinally of the fabric M, which lines w areintermitted or intersected by the'transverse lines 1) cut by thelongitudinal blade-sections m. The respective rows or groups of rows ofpoints t are placed intermediate and alternating with thesets of longblade-sections m at the regular intervals, thereby alternating thelateral and longitudinal cuts, so as to produce figures of the natureknown as broken checks or plaids. (See Figs. 5, 6, and 7 The threestyles of the pattern indicate- 5 the modifications incident toarranging the blades 15 in groups or singly, and in using one or threeinterposed broader sections, on, for interrupting or intermitting thesaid circunr ferential rows of teeth. The revolver can be made withblades recessed to give cutting-sections at the positions required, orthe sections can be formed of in dependently-inserted teeth or points;also, if more convenient, or desired, a slight inclination or spiral canbe given the lines of the cutters in lieu of their being set to rangeexactly square with the axis of the cylinder. By re'gu larly alternatinggroups of three partial rows of narrow. sections it and threeintercepting long blade-sections m, both circumferentially and laterallyof the revolver, a uniform pat tern of three transverse linesintermitting with three longitudinal lines is produced, as in Fig. 5,while if only one row of narrow sections t and one intercepting longblade-section m is used in the same order of arrangement the pat ternhas the appearance shown in Fig. 7,

intercepted by a single longblade-section m alternately offsetting atsemi-circumferential positions on the revolver, all of these severalmodifications being the result of the order of 5 arrangement embracing arow of narrow cutting-points t partially around the cylinder,intercepted by spaces, in which are, occasional long blade-sections, asshown.

It will be understood that I do not herein 1o broadly make claim toashearing-rcvolverhaving notched sectional or isolated cutting-edgesirrespective of the peculiar construction or order of arrangementdescribed; but

What I claim asof my invention, and desire I 5 to secure by LettersPatent, is-

1. A revolver or shearing-cylinder for clothshearing machines, havingseries of narrow isolated cutting sections or teeth 1, arranged incircumferential rows or groups of rows extend- 20 mg partially aroundthe cylinder, and intermitted or offset on the remaining portions of theperipheral circle by long blade-sections on, interposed at occasionalpositions, in the manner and for the purpose set forth.

2. In a cloth-shearing machine, a revolver or shearing-cylinder havingat intervals alternating series of narrow cuttin sections, points,

or teeth 25, arranged in rows or groups of rows m, alternatelyintercepting or offsetting the said rows of narrow sections, and viceversa, singly or in groups, substantially as shown, and for the purposeset forth.

\Vitness my hand this 26th day of December, A. D. 1882.

DW'IGHT CLINTON SUMNER.

\Vitnesscs:

CHAS. H. BUnLnIc'rr, S. R. BARTON.

